mirror of
https://github.com/blondie7575/GSCats.git
synced 2025-01-17 11:29:49 +00:00
Optimized span rendering moved to $E1
This commit is contained in:
blondie7575
parent
c82e9d8a30
commit
f90edac57d
1
.gitignore
vendored
1
.gitignore
vendored
@ -2,3 +2,4 @@
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/gscats.lst
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/GSCats.xcodeproj/xcuserdata/qd.xcuserdatad/xcdebugger
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/loader.lst
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/terrain_e1.lst
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@ -13,6 +13,7 @@
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700F21E01F4A3A5500D7007D /* GenerateTrigTables.py */ = {isa = PBXFileReference; lastKnownFileType = text.script.python; path = GenerateTrigTables.py; sourceTree = "<group>"; };
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700FFAFB1F40F3BF00A442DE /* font.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = font.s; sourceTree = "<group>"; };
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7059502B1F37A0BE00BBE90F /* GenerateVRAMTable.py */ = {isa = PBXFileReference; lastKnownFileType = text.script.python; path = GenerateVRAMTable.py; sourceTree = "<group>"; };
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705AAFA920040B0D001BB0ED /* terrain_e1.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = terrain_e1.s; sourceTree = "<group>"; };
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706DF1641F2D39F700AA6680 /* loader.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = loader.s; sourceTree = "<group>"; };
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706DF1651F2D4A8100AA6680 /* terrain.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = terrain.s; sourceTree = "<group>"; };
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7088096D1F2ECE8D00D4C950 /* GenerateRenderSpans.py */ = {isa = PBXFileReference; lastKnownFileType = text.script.python; path = GenerateRenderSpans.py; sourceTree = "<group>"; };
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@ -20,6 +21,8 @@
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7099E3841F41022100182A82 /* gameobject.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gameobject.s; sourceTree = "<group>"; };
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7099E3851F4107B100182A82 /* GenerateVRAMYOffset.py */ = {isa = PBXFileReference; lastKnownFileType = text.script.python; path = GenerateVRAMYOffset.py; sourceTree = "<group>"; };
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70A80FB01F43D7F200BD34C9 /* gamemanager.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = gamemanager.s; sourceTree = "<group>"; };
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70BDCBC92006AD5F00CB51F1 /* linkerConfig */ = {isa = PBXFileReference; lastKnownFileType = text; path = linkerConfig; sourceTree = "<group>"; };
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70BDCBCA200A99F200CB51F1 /* ParseMapFile.py */ = {isa = PBXFileReference; lastKnownFileType = text.script.python; path = ParseMapFile.py; sourceTree = "<group>"; };
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70C073091F5BAA3E009844A9 /* collision.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = collision.s; sourceTree = "<group>"; };
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70E266E31F6F262D005AC7E4 /* circleTable.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = circleTable.s; sourceTree = "<group>"; };
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70E554C41F807ADB00F3C871 /* spritebank.s */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.asm; path = spritebank.s; sourceTree = "<group>"; };
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@ -45,6 +48,7 @@
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706DF1641F2D39F700AA6680 /* loader.s */,
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700FFAFB1F40F3BF00A442DE /* font.s */,
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706DF1651F2D4A8100AA6680 /* terrain.s */,
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705AAFA920040B0D001BB0ED /* terrain_e1.s */,
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70C073091F5BAA3E009844A9 /* collision.s */,
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70F086A01F4230CB002446C3 /* utility.s */,
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700C39C51F2E5CA800C24F9C /* tables.s */,
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@ -55,12 +59,14 @@
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70E554C41F807ADB00F3C871 /* spritebank.s */,
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70E9D8611F2BD95400555C19 /* gscats.s */,
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70E9D8631F2BD95400555C19 /* Makefile */,
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70BDCBC92006AD5F00CB51F1 /* linkerConfig */,
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70FE79D21F8814A600E0095C /* MerlinToCA65.sh */,
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7088096D1F2ECE8D00D4C950 /* GenerateRenderSpans.py */,
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7059502B1F37A0BE00BBE90F /* GenerateVRAMTable.py */,
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7099E3851F4107B100182A82 /* GenerateVRAMYOffset.py */,
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700F21E01F4A3A5500D7007D /* GenerateTrigTables.py */,
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709175C01F60D263008FAFAB /* GenerateCircles.py */,
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70BDCBCA200A99F200CB51F1 /* ParseMapFile.py */,
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);
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sourceTree = "<group>";
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};
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17
Makefile
17
Makefile
@ -18,18 +18,21 @@ MRSPRITE=../MrSprite/mrsprite
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CHROMA=00ff00
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PALETTE=a4dffb 008800 886611 cc9933 eebb44 dd6666 ff99aa 000000 0e7db1 ffff00 ffff00 ffff00 ffff00 ffff00 ffff00 ffffff
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SPRITES=SpriteBank
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REMOTESYMBOLS=-Wl $(shell ./ParseMapFile.py *.map)
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all: $(PGM) loader
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all: terrain_e1 $(PGM) loader
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$(PGM):
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@PATH=$(PATH):/usr/local/bin; $(CL65) -t apple2enh --cpu 65816 --start-addr 0000 -l$(PGM).lst $(PGM).s
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@echo $(REMOTESYMBOLS)
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@PATH=$(PATH):/usr/local/bin; $(CL65) -t apple2enh -C linkerConfig --cpu 65816 --start-addr 0000 -l$(PGM).lst $(REMOTESYMBOLS) $(PGM).s
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java -jar $(AC) -d $(PGM).2mg CODEBANK
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java -jar $(AC) -p $(PGM).2mg CODEBANK BIN 0x0000 < $(PGM)
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java -jar $(AC) -d $(PGM).2mg $(SPRITES)00
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java -jar $(AC) -p $(PGM).2mg $(SPRITES)00 BIN 0x0000 < $(SPRITES)00.bin
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rm -f $(PGM)
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rm -f $(PGM).o
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rm -f terrain_e1.map
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osascript V2Make.scpt $(PROJECT_DIR) $(PGM)
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loader:
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@ -39,11 +42,21 @@ loader:
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rm -f loader
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rm -f loader.o
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terrain_e1:
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@PATH=$(PATH):/usr/local/bin; $(CL65) -t apple2enh -C linkerConfig --cpu 65816 --start-addr $(ADDR) -l -vm -m terrain_e1.map terrain_e1.s
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java -jar $(AC) -d $(PGM).2mg CODEBANKE1
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java -jar $(AC) -p $(PGM).2mg CODEBANKE1 BIN 0x800 < terrain_e1
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rm -f terrain_e1
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rm -f terrain_e1.o
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clean:
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rm -f $(PGM)
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rm -f $(PGM).o
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rm -f loader
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rm -f loader.o
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rm -f terrain_e1.o
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rm -f terrain_e1.map
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rm -f terrain_e1
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.PHONY: art
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art:
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64
ParseMapFile.py
Executable file
64
ParseMapFile.py
Executable file
@ -0,0 +1,64 @@
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#!/usr/bin/env python3
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# Outputs a list of exported symbols found in an ld65 link map file
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# suitable for passing as a commandline option to define those
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# same symbols in a cl65 compile/assemble operation. This allows
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# sharing symbols between code banks without having to actually
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# link them together. Sort of a low-budget DLL mechanism. :)
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import sys
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def parseInputFile(filename,bank):
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inputFile = open(filename)
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contents = inputFile.readlines()
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output = ""
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# Find exported symbols
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lineNum = 0
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for line in contents:
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if line.find("Exports list") != -1:
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break
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lineNum+=1
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# Found the exports table, so look for our symbol names
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first=1
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for line in contents[lineNum+1:]:
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if line.startswith("_") or line.startswith("-"):
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continue
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if line.startswith("Imports") or len(line)<2:
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break
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if first!=1:
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output += ","
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first = 0
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columns = line.split()
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if len(columns) > 3:
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output += ("-D,%s=0x%s,-D,%s=0x%s" % (columns[0],bank+columns[1][2:],columns[3],bank+columns[4][2:]))
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else:
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output += ("-D,%s=0x%s" % (columns[0],bank+columns[1][2:]))
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inputFile.close()
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return output
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def main(argv):
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commandline = ""
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first=1
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for file in argv:
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if first!=1:
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commandline += ","
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first = 0
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bank = file[-6:-4] # Assumes filename_XX.map
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commandline += parseInputFile(file,bank)
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print (commandline)
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if __name__ == "__main__":
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main(sys.argv[1:])
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@ -50,7 +50,7 @@ intersectRectTerrain:
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; Check Y bottom
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intersectRectTerrainBottomLoop:
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lda terrainData,y
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lda terrainDataFar,y
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cmp rectParams+6
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bpl intersectRectTerrainYep
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dey
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20
equates.s
20
equates.s
@ -28,6 +28,26 @@ SCRATCHL2 = $67 ; Second 16-bit scratch
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PARAM24 = $67 ; 24-bit param (This is almost certainly messing up AppleSoft, but meh)
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CACHEPTR = $6A ; General purpose cache pointer (This is almost certainly messing up AppleSoft, but meh)
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CACHEDATA = $6C ; General purpose cache data (This is almost certainly messing up AppleSoft, but meh)
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leftScreenEdge = $6E ; Reserved for leftScreenEdge (This is almost certainly messing up AppleSoft, but meh)
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STACKPTR = $70 ; Cache for stack pointer in fast graphics
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SHADOWREGISTER = $72 ; Cache for shadow register in fast graphics
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STACKREGISTER = $73 ; Cache for stack register in fast graphics
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; Terrain constants
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TERRAINWIDTH = 640 ; In pixels
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MAXTERRAINHEIGHT = 100 ; In pixels
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COMPILEDTERRAINROW = TERRAINWIDTH/4+3 ; In words, +2 to make room for clipping jump at end of row
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VISIBLETERRAINWIDTH = TERRAINWIDTH/4 ; In words- width minus jump return padding
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VISIBLETERRAINWINDOW = 80 ; In words
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MAXSPANSPERROW = 15
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SPANROWBYTES = MAXSPANSPERROW*2 + 2 ; In bytes
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; Terrain data, stored as height values 2 pixels wide (bytes)
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terrainDataFar = $02f500
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terrainData = $f500
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; .repeat TERRAINWIDTH/2
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; .word 0
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; .endrepeat
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terrainDataEnd = terrainData + (TERRAINWIDTH/2 * 2)
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@ -27,11 +27,13 @@ beginGameplay:
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jsr colorFill
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; Generate, compile, and clip terrain
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stz leftScreenEdge
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jsr generateTerrain
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jsr compileTerrainSpans
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jsl compileTerrainSpans
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; jsr compileTerrain
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; jsr clipTerrain
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jsr renderTerrainSpans
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jsl renderTerrainSpans
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; Create players
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lda #56
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@ -58,8 +60,8 @@ gameplayLoop:
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; lda terrainDirty
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; beq gameplayLoopKbd
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BORDER_COLOR #$3
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jsr unrenderTerrainSpans
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jsr renderTerrainSpans
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jsl unrenderTerrainSpans
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jsl renderTerrainSpans
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stz terrainDirty
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BORDER_COLOR #$1
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@ -334,7 +336,7 @@ paused:
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; c) Byte-distance from left edge of logical terrain to right edge of visible screen minus game object width in words
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mapScrollPos:
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.word 0
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leftScreenEdge:
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.word 0
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;leftScreenEdge = $6E ; Moved to zero page for speed and cross-bank convenience
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; .word 0
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rightScreenEdge:
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.word 160-GAMEOBJECTWIDTH/4-1
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BIN
gscats.2mg
BIN
gscats.2mg
Binary file not shown.
5
gscats.s
5
gscats.s
@ -8,12 +8,15 @@
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.include "macros.s"
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.include "equates.s"
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.import renderTerrainSpans
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.import unrenderTerrainSpans
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.import compileTerrainSpans
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.org $0000
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mainBank2:
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SYNCDBR
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BITS8
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lda #$f0
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sta TEXTCOLOR
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44
linkerConfig
Normal file
44
linkerConfig
Normal file
@ -0,0 +1,44 @@
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FEATURES {
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STARTADDRESS: default = $0803;
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}
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MEMORY {
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ZP: start = $0080, size = $001A, define = yes;
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HEADER: start = $0000, size = $0004, file = %O;
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RAM: start = %S, size = $9600 - %S, file = %O, define = yes;
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MOVE: start = $0000, size = $FFFF, file = %O, define = yes;
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LC: start = $D400, size = $0C00, define = yes;
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}
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SEGMENTS {
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ZEROPAGE: load = ZP, type = zp;
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EXEHDR: load = HEADER, type = ro;
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STARTUP: load = RAM, type = ro;
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LOWCODE: load = RAM, type = ro;
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CODE: load = RAM, type = ro;
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RODATA: load = RAM, type = ro;
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DATA: load = RAM, type = rw;
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ZPSAVE: load = RAM, type = bss, define = yes;
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BSS: load = RAM, type = bss, define = yes;
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INIT: load = MOVE, run = RAM, type = ro, define = yes;
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HIGHCODE: load = MOVE, run = LC, type = ro, optional = yes;
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}
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FEATURES {
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CONDES: segment = INIT,
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type = constructor,
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label = __CONSTRUCTOR_TABLE__,
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count = __CONSTRUCTOR_COUNT__;
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CONDES: segment = RODATA,
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type = destructor,
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label = __DESTRUCTOR_TABLE__,
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count = __DESTRUCTOR_COUNT__;
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CONDES: type = interruptor,
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segment = RODATA,
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label = __INTERRUPTOR_TABLE__,
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count = __INTERRUPTOR_COUNT__;
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}
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SYMBOLS {
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__STACKSIZE__: value = $0800, weak = yes;
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}
|
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47
loader.s
47
loader.s
@ -40,10 +40,42 @@ main:
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; Copy code into bank 2
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ldx fileReadLen
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lda #2
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ldy #0
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jsr copyBytes
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EMULATION
|
||||
|
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;;;;;;;;;;;;;;;;;;;;;
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|
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; Open the E1 code file
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jsr PRODOS
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.byte $c8
|
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.addr fileOpenCodeE1
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bne ioError
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|
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; Load the code into bank 0
|
||||
jsr PRODOS
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.byte $ca
|
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.addr fileRead
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bne ioError
|
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|
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; Close the file
|
||||
jsr PRODOS
|
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.byte $cc
|
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.addr fileClose
|
||||
|
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NATIVE
|
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|
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; Copy code into bank E1
|
||||
ldx fileReadLen
|
||||
lda #$E1
|
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ldy #$800 ; Must match terrain_e1 .org
|
||||
jsr copyBytes
|
||||
|
||||
EMULATION
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;
|
||||
|
||||
; Open the sprite bank file
|
||||
jsr PRODOS
|
||||
.byte $c8
|
||||
@ -66,6 +98,7 @@ main:
|
||||
; Copy sprites into bank 3
|
||||
ldx fileReadLen
|
||||
lda #3
|
||||
ldy #0
|
||||
jsr copyBytes
|
||||
|
||||
; Set up a long jump into bank 2, and
|
||||
@ -73,6 +106,7 @@ main:
|
||||
; properly to ProDOS 8
|
||||
lda #returnToProDOS
|
||||
sta PRODOSRETURN
|
||||
|
||||
jml MAINENTRY
|
||||
|
||||
returnToProDOS:
|
||||
@ -90,9 +124,13 @@ ioError:
|
||||
; bottom of any other bank. Must be in native mode.
|
||||
;
|
||||
; X = Length of data in bytes
|
||||
; Y = Origin within bank
|
||||
; A = Bank number of destination
|
||||
;
|
||||
copyBytes:
|
||||
sty copyBytesDest+1
|
||||
sty copyBytesDest2+1
|
||||
|
||||
phx
|
||||
BITS8
|
||||
sta copyBytesDest+3
|
||||
@ -135,6 +173,13 @@ fileOpenCode:
|
||||
.byte 0 ; Result (file handle)
|
||||
.byte 0 ; Padding
|
||||
|
||||
fileOpenCodeE1:
|
||||
.byte 3
|
||||
.addr codePathE1
|
||||
.addr $9200 ; 1k below BASIC.SYSTEM
|
||||
.byte 0 ; Result (file handle)
|
||||
.byte 0 ; Padding
|
||||
|
||||
fileRead:
|
||||
.byte 4
|
||||
.byte 1 ; File handle (we know it's gonna be 1)
|
||||
@ -156,5 +201,7 @@ fileOpenSprites:
|
||||
|
||||
codePath:
|
||||
pstring "/GSAPP/CODEBANK"
|
||||
codePathE1:
|
||||
pstring "/GSAPP/CODEBANKE1"
|
||||
spritePath:
|
||||
pstring "/GSAPP/SPRITEBANK00"
|
||||
|
||||
9
macros.s
9
macros.s
@ -42,6 +42,15 @@
|
||||
plb
|
||||
.endmacro
|
||||
|
||||
.macro SAVE_DBR
|
||||
phb
|
||||
phk
|
||||
plb
|
||||
.endmacro
|
||||
|
||||
.macro RESTORE_DBR
|
||||
plb
|
||||
.endmacro
|
||||
|
||||
.macro EMULATION
|
||||
sec ; Enable 8-bit mode
|
||||
|
||||
12
tables.s
12
tables.s
@ -152,16 +152,4 @@ vramYOffset:
|
||||
.word $6400,$64a0,$6540,$65e0,$6680,$6720,$67c0,$6860,$6900,$69a0,$6a40,$6ae0,$6b80,$6c20,$6cc0,$6d60,$6e00,$6ea0,$6f40,$6fe0
|
||||
.word $7080,$7120,$71c0,$7260,$7300,$73a0,$7440,$74e0,$7580,$7620,$76c0,$7760,$7800,$78a0,$7940,$79e0,$7a80,$7b20,$7bc0,$7c60
|
||||
|
||||
vramRowInvertedSpanLookup:
|
||||
.word $9d00,$9c60,$9bc0,$9b20,$9a80,$99e0,$9940,$98a0,$9800,$9760,$96c0,$9620,$9580,$94e0,$9440,$93a0,$9300,$9260,$91c0,$9120
|
||||
.word $9080,$8fe0,$8f40,$8ea0,$8e00,$8d60,$8cc0,$8c20,$8b80,$8ae0,$8a40,$89a0,$8900,$8860,$87c0,$8720,$8680,$85e0,$8540,$84a0
|
||||
.word $8400,$8360,$82c0,$8220,$8180,$80e0,$8040,$7fa0,$7f00,$7e60,$7dc0,$7d20,$7c80,$7be0,$7b40,$7aa0,$7a00,$7960,$78c0,$7820
|
||||
.word $7780,$76e0,$7640,$75a0,$7500,$7460,$73c0,$7320,$7280,$71e0,$7140,$70a0,$7000,$6f60,$6ec0,$6e20,$6d80,$6ce0,$6c40,$6ba0
|
||||
.word $6b00,$6a60,$69c0,$6920,$6880,$67e0,$6740,$66a0,$6600,$6560,$64c0,$6420,$6380,$62e0,$6240,$61a0,$6100,$6060,$5fc0,$5f20
|
||||
.word $5e80,$5de0,$5d40,$5ca0,$5c00,$5b60,$5ac0,$5a20,$5980,$58e0,$5840,$57a0,$5700,$5660,$55c0,$5520,$5480,$53e0,$5340,$52a0
|
||||
.word $5200,$5160,$50c0,$5020,$4f80,$4ee0,$4e40,$4da0,$4d00,$4c60,$4bc0,$4b20,$4a80,$49e0,$4940,$48a0,$4800,$4760,$46c0,$4620
|
||||
.word $4580,$44e0,$4440,$43a0,$4300,$4260,$41c0,$4120,$4080,$3fe0,$3f40,$3ea0,$3e00,$3d60,$3cc0,$3c20,$3b80,$3ae0,$3a40,$39a0
|
||||
.word $3900,$3860,$37c0,$3720,$3680,$35e0,$3540,$34a0,$3400,$3360,$32c0,$3220,$3180,$30e0,$3040,$2fa0,$2f00,$2e60,$2dc0,$2d20
|
||||
.word $2c80,$2be0,$2b40,$2aa0,$2a00,$2960,$28c0,$2820,$2780,$26e0,$2640,$25a0,$2500,$2460,$23c0,$2320,$2280,$21e0,$2140,$20a0
|
||||
|
||||
.include "circleTable.s"
|
||||
|
||||
287
terrain.s
287
terrain.s
@ -4,16 +4,6 @@
|
||||
; Created by Quinn Dunki on 7/29/17
|
||||
;
|
||||
|
||||
|
||||
TERRAINWIDTH = 640 ; In pixels
|
||||
MAXTERRAINHEIGHT = 100 ; In pixels
|
||||
COMPILEDTERRAINROW = TERRAINWIDTH/4+3 ; In words, +2 to make room for clipping jump at end of row
|
||||
VISIBLETERRAINWIDTH = TERRAINWIDTH/4 ; In words- width minus jump return padding
|
||||
VISIBLETERRAINWINDOW = 80 ; In words
|
||||
MAXSPANSPERROW = 15
|
||||
SPANROWBYTES = MAXSPANSPERROW*2 + 2 ; In bytes
|
||||
|
||||
|
||||
.if 0
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; renderTerrain
|
||||
@ -64,142 +54,6 @@ renderTerrainDone:
|
||||
rts
|
||||
.endif
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; renderTerrainSpans:
|
||||
;
|
||||
;
|
||||
renderTerrainSpans:
|
||||
SAVE_AXY
|
||||
FASTGRAPHICS
|
||||
|
||||
lda #$800 ; Prepare unrender cache
|
||||
tcs
|
||||
|
||||
lda #terrainSpanWriteCache
|
||||
sta CACHEPTR
|
||||
|
||||
lda #MAXTERRAINHEIGHT-1
|
||||
|
||||
renderTerrainSpansLoop:
|
||||
sta PARAML1
|
||||
|
||||
; Find row data
|
||||
lda PARAML1
|
||||
asl ; Shifts must match SPANROWBYTES
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
tay
|
||||
lda terrainSpanData,y
|
||||
sta SCRATCHL ; Track span color
|
||||
|
||||
; Find VRAM row
|
||||
lda PARAML1
|
||||
asl
|
||||
tax
|
||||
lda vramRowInvertedSpanLookup,x
|
||||
tax
|
||||
|
||||
adc #160
|
||||
sta PARAML0 ; Watch for end of VRAM row
|
||||
|
||||
; Find span that intersects left logical edge
|
||||
lda #0
|
||||
clc
|
||||
|
||||
renderTerrainRowSpansFindLeftLoop:
|
||||
adc terrainSpanData+2,y
|
||||
cmp leftScreenEdge
|
||||
bpl renderTerrainRowSpansFoundLeft
|
||||
iny
|
||||
iny
|
||||
sta CACHEDATA
|
||||
lda SCRATCHL
|
||||
eor #%110000 ; Toggle span color cache
|
||||
sta SCRATCHL
|
||||
lda CACHEDATA
|
||||
bra renderTerrainRowSpansFindLeftLoop
|
||||
|
||||
renderTerrainRowSpansFoundLeft:
|
||||
sec
|
||||
sbc leftScreenEdge ; A now holds remainder of leftmost span
|
||||
; and Y points to leftmost span
|
||||
|
||||
renderTerrainRowSpansLoop:
|
||||
sta SCRATCHL2
|
||||
|
||||
; Set fill mode byte for this span
|
||||
lda SCRATCHL
|
||||
sta VRAMBANK,x
|
||||
|
||||
; Cache the index we wrote to so we can erase later
|
||||
phx
|
||||
; txa
|
||||
; sta (CACHEPTR)
|
||||
; inc CACHEPTR
|
||||
; inc CACHEPTR
|
||||
|
||||
; Advance to end of span
|
||||
clc
|
||||
txa
|
||||
adc SCRATCHL2
|
||||
cmp PARAML0
|
||||
bpl renderTerrainRowSpansDone
|
||||
tax
|
||||
|
||||
; Prepare for next span
|
||||
iny
|
||||
iny
|
||||
lda SCRATCHL
|
||||
eor #%110000 ; Toggle span color cache
|
||||
sta SCRATCHL
|
||||
|
||||
lda terrainSpanData+2,y
|
||||
bra renderTerrainRowSpansLoop
|
||||
|
||||
renderTerrainRowSpansDone:
|
||||
lda PARAML1
|
||||
dec
|
||||
bne renderTerrainSpansLoop
|
||||
|
||||
pea 0 ; Null-terminate the unrender cache
|
||||
SLOWGRAPHICS
|
||||
RESTORE_AXY
|
||||
rts
|
||||
|
||||
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; unrenderTerrainSpans:
|
||||
;
|
||||
;
|
||||
|
||||
unrenderTerrainSpans:
|
||||
SAVE_AXY
|
||||
phb
|
||||
pea $e1e1 ; Work entirely in bank E1 for all local read/writes
|
||||
plb
|
||||
plb
|
||||
|
||||
ldy #$800-1
|
||||
|
||||
unrenderTerrainSpansLoop:
|
||||
lda 0,y
|
||||
beq unrenderTerrainSpansDone
|
||||
tax
|
||||
lda #0
|
||||
sta a:0,x
|
||||
dey
|
||||
dey
|
||||
bra unrenderTerrainSpansLoop
|
||||
|
||||
unrenderTerrainSpansDone:
|
||||
plb
|
||||
RESTORE_AXY
|
||||
rts
|
||||
|
||||
|
||||
|
||||
.if 0
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
@ -618,123 +472,6 @@ compileTerrainOpcode:
|
||||
|
||||
.endif
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; compileTerrainSpans:
|
||||
;
|
||||
;
|
||||
compileTerrainSpans:
|
||||
pha
|
||||
lda #0
|
||||
|
||||
compileTerrainSpansLoop:
|
||||
sta PARAML1
|
||||
jsr compileTerrainSpansRow
|
||||
lda PARAML1
|
||||
inc
|
||||
cmp #MAXTERRAINHEIGHT
|
||||
bne compileTerrainSpansLoop
|
||||
|
||||
pla
|
||||
rts
|
||||
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; compileTerrainSpansRow:
|
||||
;
|
||||
; PARAML1 = Row index (bottom relative)
|
||||
;
|
||||
; Trashes SCRATCHL
|
||||
;
|
||||
compileTerrainSpansRow:
|
||||
SAVE_AXY
|
||||
|
||||
lda PARAML1
|
||||
asl ; Shifts must match SPANROWBYTES
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
clc
|
||||
adc #terrainSpanData
|
||||
sta SCRATCHL
|
||||
|
||||
ldy #0
|
||||
ldx #TERRAINWIDTH-2
|
||||
|
||||
lda terrainData,x ; Figure out start value for row
|
||||
cmp PARAML1
|
||||
bcs compileTerrainSpansRowInitGreen
|
||||
|
||||
compileTerrainSpansRowInitBlack:
|
||||
lda #$0020 ; First span is black
|
||||
sta (SCRATCHL) ; Initialize the row
|
||||
inc SCRATCHL
|
||||
inc SCRATCHL
|
||||
ldy #-1
|
||||
|
||||
compileTerrainSpansRowBlackStart:
|
||||
iny
|
||||
|
||||
compileTerrainSpansRowBlackLoop:
|
||||
lda terrainData,x
|
||||
cmp PARAML1
|
||||
bcs compileTerrainSpansBlackEnd
|
||||
dex
|
||||
dex
|
||||
iny
|
||||
cpx #-2
|
||||
bne compileTerrainSpansRowBlackLoop
|
||||
|
||||
compileTerrainSpansBlackEnd:
|
||||
tya ; Store this span's length
|
||||
sta (SCRATCHL)
|
||||
inc SCRATCHL
|
||||
inc SCRATCHL
|
||||
|
||||
dex ; Begin searching for next span
|
||||
dex
|
||||
cpx #0
|
||||
bmi compileTerrainSpansRowDone
|
||||
ldy #0
|
||||
bra compileTerrainSpansRowGreenStart
|
||||
|
||||
compileTerrainSpansRowDone:
|
||||
RESTORE_AXY
|
||||
rts
|
||||
|
||||
compileTerrainSpansRowInitGreen:
|
||||
lda #$0010 ; First span is green
|
||||
sta (SCRATCHL) ; Initialize the row
|
||||
inc SCRATCHL
|
||||
inc SCRATCHL
|
||||
ldy #-1
|
||||
|
||||
compileTerrainSpansRowGreenStart:
|
||||
iny
|
||||
|
||||
compileTerrainSpansRowGreenLoop:
|
||||
lda terrainData,x
|
||||
cmp PARAML1
|
||||
bcc compileTerrainSpansGreenEnd
|
||||
dex
|
||||
dex
|
||||
iny
|
||||
cpx #-2
|
||||
bne compileTerrainSpansRowGreenLoop
|
||||
|
||||
compileTerrainSpansGreenEnd:
|
||||
tya ; Store this span's length
|
||||
sta (SCRATCHL)
|
||||
inc SCRATCHL
|
||||
inc SCRATCHL
|
||||
|
||||
dex ; Begin searching for next span
|
||||
dex
|
||||
cpx #0
|
||||
bmi compileTerrainSpansRowDone
|
||||
ldy #0
|
||||
bra compileTerrainSpansRowBlackStart
|
||||
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; prepareRowRendering:
|
||||
@ -820,15 +557,6 @@ generateTerrainLoop:
|
||||
rts
|
||||
|
||||
|
||||
|
||||
; Terrain data, stored as height values 2 pixels wide (bytes)
|
||||
|
||||
terrainData:
|
||||
.repeat TERRAINWIDTH/2
|
||||
.word 0
|
||||
.endrepeat
|
||||
terrainDataEnd:
|
||||
|
||||
.if 0
|
||||
compiledTerrain:
|
||||
.repeat COMPILEDTERRAINROW * MAXTERRAINHEIGHT
|
||||
@ -842,18 +570,3 @@ clippedTerrainData:
|
||||
.endrepeat
|
||||
.endif
|
||||
|
||||
terrainSpanData:
|
||||
.repeat MAXTERRAINHEIGHT
|
||||
.word 0 ; Start value (0=BG)
|
||||
.repeat MAXSPANSPERROW
|
||||
.word 0 ; Length (in bytes)
|
||||
.endrepeat
|
||||
.endrepeat
|
||||
|
||||
terrainSpanWriteCacheNull:
|
||||
.word 0 ; Null terminator for when popping off LIFO
|
||||
terrainSpanWriteCache:
|
||||
.repeat 512
|
||||
.word 0 ; LIFO for tracking span byte writes
|
||||
.endrepeat
|
||||
|
||||
|
||||
304
terrain_e1.s
Normal file
304
terrain_e1.s
Normal file
@ -0,0 +1,304 @@
|
||||
;
|
||||
; terrain (in E1 bank)
|
||||
;
|
||||
; Fill-mode terrain rendering code snippets
|
||||
; that live in bank E1 for maximum speed.
|
||||
;
|
||||
; Created by Quinn Dunki on 7/29/17
|
||||
;
|
||||
|
||||
.include "equates.s"
|
||||
.include "macros.s"
|
||||
|
||||
UNRENDERCACHESTACK = $7ff
|
||||
|
||||
OP16
|
||||
|
||||
.org $800
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; renderTerrainSpans:
|
||||
;
|
||||
;
|
||||
renderTerrainSpans:
|
||||
SAVE_AXY
|
||||
SAVE_DBR
|
||||
FASTGRAPHICS
|
||||
|
||||
lda #UNRENDERCACHESTACK ; Prepare unrender cache
|
||||
tcs
|
||||
|
||||
lda #MAXTERRAINHEIGHT-1
|
||||
|
||||
renderTerrainSpansLoop:
|
||||
sta PARAML1
|
||||
|
||||
; Find row data
|
||||
lda PARAML1
|
||||
asl ; Shifts must match SPANROWBYTES
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
tay
|
||||
lda terrainSpanData,y
|
||||
sta SCRATCHL ; Track span color
|
||||
|
||||
; Find VRAM row
|
||||
lda PARAML1
|
||||
asl
|
||||
tax
|
||||
lda vramRowInvertedSpanLookup,x
|
||||
tax
|
||||
|
||||
adc #160
|
||||
sta PARAML0 ; Watch for end of VRAM row
|
||||
|
||||
; Find span that intersects left logical edge
|
||||
lda #0
|
||||
clc
|
||||
|
||||
renderTerrainRowSpansFindLeftLoop:
|
||||
adc terrainSpanData+2,y
|
||||
cmp leftScreenEdge
|
||||
bpl renderTerrainRowSpansFoundLeft
|
||||
iny
|
||||
iny
|
||||
sta CACHEDATA
|
||||
lda SCRATCHL
|
||||
eor #%110000 ; Toggle span color cache
|
||||
sta SCRATCHL
|
||||
lda CACHEDATA
|
||||
bra renderTerrainRowSpansFindLeftLoop
|
||||
|
||||
renderTerrainRowSpansFoundLeft:
|
||||
sec
|
||||
sbc leftScreenEdge ; A now holds remainder of leftmost span
|
||||
; and Y points to leftmost span
|
||||
|
||||
renderTerrainRowSpansLoop:
|
||||
sta SCRATCHL2
|
||||
|
||||
; Set fill mode byte for this span
|
||||
lda SCRATCHL
|
||||
sta VRAMBANK,x
|
||||
|
||||
; Cache the index we wrote to so we can erase later
|
||||
phx
|
||||
|
||||
; Advance to end of span
|
||||
clc
|
||||
txa
|
||||
adc SCRATCHL2
|
||||
cmp PARAML0
|
||||
bpl renderTerrainRowSpansDone
|
||||
tax
|
||||
|
||||
; Prepare for next span
|
||||
iny
|
||||
iny
|
||||
lda SCRATCHL
|
||||
eor #%110000 ; Toggle span color cache
|
||||
sta SCRATCHL
|
||||
|
||||
lda terrainSpanData+2,y
|
||||
bra renderTerrainRowSpansLoop
|
||||
|
||||
renderTerrainRowSpansDone:
|
||||
lda PARAML1
|
||||
dec
|
||||
bne renderTerrainSpansLoop
|
||||
|
||||
pea 0 ; Null-terminate the unrender cache
|
||||
SLOWGRAPHICS
|
||||
RESTORE_DBR
|
||||
RESTORE_AXY
|
||||
rtl
|
||||
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; unrenderTerrainSpans:
|
||||
;
|
||||
;
|
||||
|
||||
unrenderTerrainSpans:
|
||||
SAVE_AXY
|
||||
SAVE_DBR
|
||||
phb
|
||||
pea $e1e1 ; Work entirely in bank E1 for all local read/writes
|
||||
plb
|
||||
plb
|
||||
|
||||
ldy #UNRENDERCACHESTACK-1
|
||||
|
||||
unrenderTerrainSpansLoop:
|
||||
lda 0,y
|
||||
beq unrenderTerrainSpansDone
|
||||
tax
|
||||
lda #0
|
||||
sta a:0,x
|
||||
dey
|
||||
dey
|
||||
bra unrenderTerrainSpansLoop
|
||||
|
||||
unrenderTerrainSpansDone:
|
||||
plb
|
||||
RESTORE_DBR
|
||||
RESTORE_AXY
|
||||
rtl
|
||||
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; compileTerrainSpans:
|
||||
;
|
||||
;
|
||||
compileTerrainSpans:
|
||||
pha
|
||||
SAVE_DBR
|
||||
lda #0
|
||||
|
||||
compileTerrainSpansLoop:
|
||||
sta PARAML1
|
||||
jsr compileTerrainSpansRow
|
||||
lda PARAML1
|
||||
inc
|
||||
cmp #MAXTERRAINHEIGHT
|
||||
bne compileTerrainSpansLoop
|
||||
|
||||
RESTORE_DBR
|
||||
pla
|
||||
rtl
|
||||
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; compileTerrainSpansRow:
|
||||
;
|
||||
; PARAML1 = Row index (bottom relative)
|
||||
;
|
||||
; Trashes SCRATCHL
|
||||
;
|
||||
compileTerrainSpansRow:
|
||||
SAVE_AXY
|
||||
|
||||
lda PARAML1
|
||||
asl ; Shifts must match SPANROWBYTES
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
asl
|
||||
clc
|
||||
adc #terrainSpanData
|
||||
sta SCRATCHL
|
||||
|
||||
ldy #0
|
||||
ldx #TERRAINWIDTH-2
|
||||
|
||||
lda terrainDataFar,x ; Figure out start value for row
|
||||
cmp PARAML1
|
||||
bcs compileTerrainSpansRowInitGreen
|
||||
|
||||
compileTerrainSpansRowInitBlack:
|
||||
lda #$0020 ; First span is black
|
||||
sta (SCRATCHL) ; Initialize the row
|
||||
inc SCRATCHL
|
||||
inc SCRATCHL
|
||||
ldy #-1
|
||||
|
||||
compileTerrainSpansRowBlackStart:
|
||||
iny
|
||||
|
||||
compileTerrainSpansRowBlackLoop:
|
||||
lda terrainDataFar,x
|
||||
cmp PARAML1
|
||||
bcs compileTerrainSpansBlackEnd
|
||||
dex
|
||||
dex
|
||||
iny
|
||||
cpx #-2
|
||||
bne compileTerrainSpansRowBlackLoop
|
||||
|
||||
compileTerrainSpansBlackEnd:
|
||||
tya ; Store this span's length
|
||||
sta (SCRATCHL)
|
||||
inc SCRATCHL
|
||||
inc SCRATCHL
|
||||
|
||||
dex ; Begin searching for next span
|
||||
dex
|
||||
cpx #0
|
||||
bmi compileTerrainSpansRowDone
|
||||
ldy #0
|
||||
bra compileTerrainSpansRowGreenStart
|
||||
|
||||
compileTerrainSpansRowDone:
|
||||
RESTORE_AXY
|
||||
rts
|
||||
|
||||
compileTerrainSpansRowInitGreen:
|
||||
lda #$0010 ; First span is green
|
||||
sta (SCRATCHL) ; Initialize the row
|
||||
inc SCRATCHL
|
||||
inc SCRATCHL
|
||||
ldy #-1
|
||||
|
||||
compileTerrainSpansRowGreenStart:
|
||||
iny
|
||||
|
||||
compileTerrainSpansRowGreenLoop:
|
||||
lda terrainDataFar,x
|
||||
cmp PARAML1
|
||||
bcc compileTerrainSpansGreenEnd
|
||||
dex
|
||||
dex
|
||||
iny
|
||||
cpx #-2
|
||||
bne compileTerrainSpansRowGreenLoop
|
||||
|
||||
compileTerrainSpansGreenEnd:
|
||||
tya ; Store this span's length
|
||||
sta (SCRATCHL)
|
||||
inc SCRATCHL
|
||||
inc SCRATCHL
|
||||
|
||||
dex ; Begin searching for next span
|
||||
dex
|
||||
cpx #0
|
||||
bmi compileTerrainSpansRowDone
|
||||
ldy #0
|
||||
bra compileTerrainSpansRowBlackStart
|
||||
|
||||
terrainSpanData:
|
||||
.repeat MAXTERRAINHEIGHT
|
||||
.word 0 ; Start value (0=BG)
|
||||
.repeat MAXSPANSPERROW
|
||||
.word 0 ; Length (in bytes)
|
||||
.endrepeat
|
||||
.endrepeat
|
||||
|
||||
|
||||
vramRowInvertedSpanLookup:
|
||||
.word $9d00,$9c60,$9bc0,$9b20,$9a80,$99e0,$9940,$98a0,$9800,$9760,$96c0,$9620,$9580,$94e0,$9440,$93a0,$9300,$9260,$91c0,$9120
|
||||
.word $9080,$8fe0,$8f40,$8ea0,$8e00,$8d60,$8cc0,$8c20,$8b80,$8ae0,$8a40,$89a0,$8900,$8860,$87c0,$8720,$8680,$85e0,$8540,$84a0
|
||||
.word $8400,$8360,$82c0,$8220,$8180,$80e0,$8040,$7fa0,$7f00,$7e60,$7dc0,$7d20,$7c80,$7be0,$7b40,$7aa0,$7a00,$7960,$78c0,$7820
|
||||
.word $7780,$76e0,$7640,$75a0,$7500,$7460,$73c0,$7320,$7280,$71e0,$7140,$70a0,$7000,$6f60,$6ec0,$6e20,$6d80,$6ce0,$6c40,$6ba0
|
||||
.word $6b00,$6a60,$69c0,$6920,$6880,$67e0,$6740,$66a0,$6600,$6560,$64c0,$6420,$6380,$62e0,$6240,$61a0,$6100,$6060,$5fc0,$5f20
|
||||
.word $5e80,$5de0,$5d40,$5ca0,$5c00,$5b60,$5ac0,$5a20,$5980,$58e0,$5840,$57a0,$5700,$5660,$55c0,$5520,$5480,$53e0,$5340,$52a0
|
||||
.word $5200,$5160,$50c0,$5020,$4f80,$4ee0,$4e40,$4da0,$4d00,$4c60,$4bc0,$4b20,$4a80,$49e0,$4940,$48a0,$4800,$4760,$46c0,$4620
|
||||
.word $4580,$44e0,$4440,$43a0,$4300,$4260,$41c0,$4120,$4080,$3fe0,$3f40,$3ea0,$3e00,$3d60,$3cc0,$3c20,$3b80,$3ae0,$3a40,$39a0
|
||||
.word $3900,$3860,$37c0,$3720,$3680,$35e0,$3540,$34a0,$3400,$3360,$32c0,$3220,$3180,$30e0,$3040,$2fa0,$2f00,$2e60,$2dc0,$2d20
|
||||
.word $2c80,$2be0,$2b40,$2aa0,$2a00,$2960,$28c0,$2820,$2780,$26e0,$2640,$25a0,$2500,$2460,$23c0,$2320,$2280,$21e0,$2140,$20a0
|
||||
|
||||
|
||||
|
||||
|
||||
.export renderTerrainSpans
|
||||
.export unrenderTerrainSpans
|
||||
.export compileTerrainSpans
|
||||
|
||||
|
||||
; Suppress some linker warnings - Must be the last thing in the file
|
||||
.SEGMENT "ZPSAVE"
|
||||
.SEGMENT "EXEHDR"
|
||||
.SEGMENT "STARTUP"
|
||||
.SEGMENT "INIT"
|
||||
.SEGMENT "LOWCODE"
|
||||
Loading…
x
Reference in New Issue
Block a user